1.0.0

- Java code added to access excel data
- C# code added to access excel data
- Python code added to access excel data

.gitignore

+# Java
+.idea/
+out/
+
+# C Sharp
+[Bb]in/
+[Oo]bj/
+
+# Python
+.vscode/
\ No newline at end of file

C#/prototype_csharp/prototype_csharp.sln

+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.31129.286
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "prototype_csharp", "prototype_csharp\prototype_csharp.csproj", "{FC4A3022-58C4-430D-B12B-E58D412E95AD}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{FC4A3022-58C4-430D-B12B-E58D412E95AD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FC4A3022-58C4-430D-B12B-E58D412E95AD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FC4A3022-58C4-430D-B12B-E58D412E95AD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FC4A3022-58C4-430D-B12B-E58D412E95AD}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {7B5C9067-968F-42C4-B4B5-138212FE9A05}
+	EndGlobalSection
+EndGlobal

C#/prototype_csharp/prototype_csharp/Program.cs

+using Microsoft.Office.Interop.Excel;
+using System;
+using System.IO;
+using Range = Microsoft.Office.Interop.Excel.Range;
+
+namespace prototype_csharp
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            string filename = Path.GetFullPath(Path.Combine(Directory.GetCurrentDirectory(), @"../../../../../../")) + "demo.xlsx";
+            var excelApp = new Microsoft.Office.Interop.Excel.Application();
+
+            Workbook workbook = excelApp.Workbooks.Open(filename);
+            Worksheet worksheet = workbook.Worksheets[1];
+            Range range = worksheet.UsedRange;
+
+            string strResult = (string)(range.Cells[1, 1] as Range).Value2;
+            Console.WriteLine(strResult);
+
+            //Garbage Collector things
+            workbook.Close();
+            excelApp.Quit();
+        }
+    }
+}

C#/prototype_csharp/prototype_csharp/prototype_csharp.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <COMReference Include="Microsoft.Office.Interop.Excel">
+      <WrapperTool>tlbimp</WrapperTool>
+      <VersionMinor>9</VersionMinor>
+      <VersionMajor>1</VersionMajor>
+      <Guid>00020813-0000-0000-c000-000000000046</Guid>
+      <Lcid>0</Lcid>
+      <Isolated>false</Isolated>
+      <EmbedInteropTypes>true</EmbedInteropTypes>
+    </COMReference>
+  </ItemGroup>
+
+</Project>

Java/Java.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="poi-ooxml-5.0.0" level="project" />
+  </component>
+</module>
\ No newline at end of file

Java/src/com/company/Main.java

+package com.company;
+
+import org.apache.poi.ss.usermodel.*;
+
+import java.io.File;
+
+public class Main {
+
+    public static void main(String[] args) {
+	// write your code here
+        try {
+            File directory = new File(System.getProperty("user.dir"));
+            String filename = directory.getParent() + "/demo.xlsx";
+
+            Workbook workbook = WorkbookFactory.create(new File(filename));
+            Sheet sheet = workbook.getSheetAt(0);
+            Row row = sheet.getRow(1);
+            Cell cell = row.getCell(0);
+
+            System.out.println(cell.getStringCellValue());
+        } catch (Exception ex) {
+            System.out.println(ex.toString());
+        }
+    }
+}

Python/prototype_py.py

+import openpyxl
+
+filename = openpyxl.load_workbook('../demo.xlsx')
+sheet = filename["Tabelle1"]
+
+print(sheet['A1'].value)
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